Device for cleaning the tire of a roller

ABSTRACT

A device for removing dirt adhering to the tire ( 2 ) of a roller used for compacting soil and for spraying the tire ( 2 ) with water. The scraping unit ( 5, 6 ) and a nozzle system ( 10, 11, 12 ) are joined into one modular component and the scraper ( 6 ) forms a cavity ( 10 ) that is sealed off from a scraper support ( 5 ). A water supply pipe ( 11 ) leads into the cavity ( 10 ) from which nozzles ( 12 ) branch off through the wall of the scraper support ( 5 ).

BACKGROUND OF THE INVENTION

1. Field of the Invention

This application claims priority from PCT/EP97/06597, filed Nov. 261997.

The invention relates to a device for cleaning the tire of a soiltamping roller of adhering dirt and for spraying the tire with water,this device being provided in a known way with a stripping device whichextends essentially perpendicularly to the direction of rotation of thetire over the tire region to be cleaned and which is fastened to a tirecarrier in a fixed position in relation to the tire, with a nozzlearrangement which is fastened to the tire carrier in a fixed position inrelation to the tire, and with nozzles, arranged at a distance from oneanother and approximately parallel to the stripping device, for sprayingwater onto the tire behind the stripper in the tire running direction.

2. Description of the Related Art

In the known devices of this type, the stripping device and the nozzlearrangement are provided as components which are separate from oneanother and which each have to be fastened independently to the tirecarrier.

OBJECT AND SUMMARY OF THE INVENTION

The object of this invention is to provide a device for cleaning dirtand spraying a tire of a soil tamping rollers, which, as regards bothits design and its mounting on the tire carrier, is improved, ascompared with the known devices, in such a way that it requires a loweroutlay in terms of manufacture and assembly.

According to the invention, the above object is achieved in that thestripping device and the nozzle arrangement are combined to form astructural unit and the latter is formed from a trough-like stripperholder, which extends continuously over the width of the tire region tothe cleaned, and from a stripper, which is arranged in a stripper holderand which projects toward the tire from the stripper holder over thelength of the latter, there being formed in the stripper a cavity whichis sealed off relative to the stripper holder and extends over asubstantial part of the length of the latter and into which a waterinflow line opens and from which the nozzles branch off through the wallof the stripper holder.

The device according to the invention consists of only a few componentswhich are each independently shaped in a simple way and which can easilybe connected to one another to form the desired structural unit, andsaid device can also be mounted on a tire carrier in a very simple waybecause all its parts are combined to form a single structural unit.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in more detail below by means of an exemplaryembodiment with reference to the drawing in which:

FIG. 1 shows the device mounted on the tire carrier and resting with itsstripper against the tire, in side view as seen parallel to the tireaxis,

FIG. 2 shows the device in a front view, as seen from the left by theobserver of FIG. 1, the connection piece between the device and the tirecarrier not being illustrated for the sake of greater clarity, and

FIG. 3 shows a cross section through a device in a section along thesectional line III—III in FIG. 2.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The device 1 illustrated in the drawing serves for cleaning a tire 2 ofa soil tamping roller, the tire being indicated merely diagrammaticallyin FIG. 1, of adhering dirt and for spraying the tire 2 with water.

The device 1 is fastened, in the oblique position in relation to thetire 2 evident from FIG. 1, to the tire carrier 4, likewise indicatedmerely diagrammatically in FIG. 1, by means of a connection element 3which is not illustrated in FIG. 2 and FIG. 3 for the sake of clarity.

The device 1 has a stripping device and a nozzle arrangement which arecombined to form a structural unit. This structural unit consists of atrough-like stripper holder 5, and a stripper 6. The stripper 6 isformed from two parts 5 a and 5 b and which extend continuously over thewidth of that region of the tire 2 to be cleaned. The stripper 6 is madeof elastic plastic, is arranged in the stripper holder 5, and has widesides 6 a, 6 b parallel to one another and, with its end regions locatedon its end faces and on the left and right for the observer of FIG. 2,fills the cross section of the stripper holder 5 in an essentiallyliquid-tight manner. The material of the stripper is preferablypolyurethane.

As already mentioned, the stripper holder 5 consists of two parts 5 aand 5 b which can be closed together by means of screw bolts 7 a andnuts 7 b, extend in each case over the length of the stripper 6 andbetween them form a trough 9 for receiving the stripper 6 in asealed-off manner. The trough 9 has an essentially rectangular U-shapedcross section.

As may best be seen from FIG. 2, the stripper 6 forms a cavity 10 whichis sealed off relative to the stripper holder 5 and extends over asubstantial part of the length of the stripper holder 5. A water inflowline 11 branches off into the cavity 10 through the wall of the stripperholder part 5 a, and nozzles 12 branch off from the cavity 10 throughthe wall of the stripper holder part 5 b. The edge of the stripper 6that is positioned adjacent the tire 2 extends essentiallyperpendicularly to the direction of rotation of the tire 2 andessentially parallel to the surface of the tire 2 over the region to becleaned. Nozzles 12, arranged at a distance from one another andapproximately parallel to the stripper 6, are arranged in such a waythat the water emerging from them passes onto the tire 2 behind thestripper 6 in the tire running direction.

The two parts 5 a, 5 b forming the stripper holder are each have bent atright angles to the other parts 5 a, 5 b along their longitudinal edgeswhich are located at the top in the position of use. A bent leg 5 c ofthe part 5 a faces the stripper 6 and has a width correspondingessentially to the thickness of the stripper 6. The two parts 5 a, 5 bof the stripper holder are reinforced by the legs 5 c. Part 5 ais alsoat the lower end, by a further angled wall part 5 d, so that thestripper 6 is retained securely in the desired oblique position relativeto the tire 2, as is evident from FIG. 1.

As is clear from FIG. 2 and FIG. 3, the part 5 b located on the rightfor the observer of FIG. 3 and at the rear for the observer of FIG. 2terminates, at its lower end facing the tire 2, in tines 5 e. Tines 5 eare angled toward the stripper holder part 5 a, and are distributed overthe length of the part 5 b, and pass through the passage holes 13 of thestripper 6 and through orifices 14 in the part 5 a of the stripperholder 5. The orifices 14 have a smaller cross section than the passageholes. The tines 5 e retain the stripper 6 immovably in the stripperholder 5 and, at the same time, ensure that the stripper parts 5 a, 5 bare in the desired predetermined position in relation to one another.

The connection of the two parts 5 a, 5 b of the stripper holder 5 underthe stripper 6 by means of the screw bolts 7 a and nuts 7 b brings aboutsecure releasable bracing of the stripper holder 5 against the stripper6, so that no water can flow out of the cavity 10 along the wide sides 6a, 6b between the parts 5 a and 5 b, on the one hand, and the stripper6, on the other hand.

As can be seen in FIG. 1, the stripper 6 is set preferably at an acuteangle to the tire 2 counter to the running direction 13. A second device1 is located, at an opposite set angle, on the other side of the uppervertex of the tire 2 and performs the stripping function there in theopposite running direction of the tire 2.

What is claimed is:
 1. A device for cleaning a tire of a soil tampingroller of adhering dirt and for spraying the tire with water,comprising: a) a stripping device which extends essentiallyperpendicularly from a direction of tire rotation over a region of thetire to be cleaned and which is fastened to a tire carrier in a fixedposition in relation to the tire, and b) a nozzle arrangement which isfastened to the tire carrier in a fixed position in relation to the tireand which is provided with nozzles, the nozzles being arranged at adistance from one another and approximately parallel to the strippingdevice in the direction of tire rotation, wherein c) the strippingdevice and the nozzle arrangement are combined to form a structuralunit, and d) the structural unit is formed from aa) a stripper holderwhich extends continuously over a width of the tire region to becleaned, and bb) a stripper which is arranged in the stripper holder,and which projects over an entire length of the stripper holder out ofthe stripper holder, and toward the tire, e) the stripper has a cavitywhich is sealed off relative to the stripper holder which extends over asubstantial part of the length of the stripper holder, into which awater inflow line opens, and from which the nozzle branch off through awall of the stripper holder.
 2. The device as claimed in claim 1,wherein a trough of the stripper holder that receives the stripper hasan essentially U-shaped cross section.
 3. The device as claimed in claim1, wherein the stripper holder includes two parts which each extend overan entire length of the stripper which are capable of being closedtogether,and which cooperate to form a trough for receiving the stripperin a scaled-off manner.
 4. The device as claimed in claim 3, wherein thetwo parts of the stripper holder are reinforced by angled wall partsextending over an entire length of the parts.
 5. The device as claimedin claim 3, wherein at least one of the two parts of the stripper holderis bent at right angles toward the other part along a longitudinal edgethereof, and the bent part has a width corresponding essentially to athickness of the stripper.
 6. The device as claimed in claim 3, whereinthe two parts of the stripper holder are braced releasably against thestripper.
 7. The device as claimed in claim 1, wherein the stripper isformed from an elastic plastic, has sides that are parallel to oneanother, and fills a cross section of a trough of the stripper holder inan essentially liquid-tight manner.
 8. The device as claimed in claim 7,wherein the elastic plastic consists of polyurethane.
 9. The device asclaimed in claim 7, wherein the cavity in the stripper is formed by anedge cutout in a region of the stripper which is located in the stripperholder.
 10. The device as claimed in claim 1, wherein the stripperextends an acute angle to the tire counter to the direction of tirerotation.
 11. In combination: 1) a tire for a soil tamping roller; and2) a device for cleaning the tire of adhering dirt and for spraying thetire with water, the device comprising a) a stripping device whichextends essentially perpendicularly from a direction of tire rotationover a region of the tire to be cleaned and which is fastened to a tirecarrier in a fixed position in relation to the tire, and b) a nozzlearrangement which is fastened to the tire carrier in a fixed position inrelation to the tire and which is provided with nozzles, the nozzlesbeing arranged at a distance from one another and approximately parallelto the stripping device in the direction of tire rotation, wherein c)the stripping device and the nozzle arrangement are combined to form astructural unit, and d) the structural unit is formed from aa) astripper holder which extends continuously over a width of the tireregion to be cleaned, and bb) a stripper which is arranged in thestripper holder and which projects over an entire length of the stripperholder, out of the stripper holder, and toward the tire, e) the stripperhas a cavity which is sealed off relative to the stripper holder whichextends over a substantial part of the length of the stripper holder,into which a water inflow line opens, and from which the nozzles branchoff through a wall of the stripper holder.